A hub spraying line exhaust heat energy recovery purification system

Abstract

The utility model discloses a kind of wheel hub spraying line waste gas heat energy recovery purification systems, it is related to spraying waste gas purification technical field, waste gas heat energy recovery purification system, including heat energy box, heat energy box built-in water tank, and water tank built-in waste gas heat dissipation box, waste gas heat dissipation box surface is concave-convex, one end of waste gas heat dissipation box is provided with waste gas intake pipe, and waste gas intake pipe is sequentially penetrated water tank and heat energy box and extends to heat energy box outside, and the end of waste gas intake pipe is communicated with the spraying chamber on wheel hub spraying line by flange, the other end of waste gas heat dissipation box is connected with waste gas outlet pipe, waste gas outlet pipe is sequentially penetrated water tank and heat energy box and extends to heat energy box outside, and the end of waste gas outlet pipe is connected with filter dress.The utility model in waste gas heat dissipation box surface is concave-convex, increase the contact area of waste gas and water in water tank, can more effectively transfer the heat in waste gas to water in water tank, improve heat energy recovery efficiency, save energy.

Description

Technical Field

[0001] This utility model belongs to the field of spray painting exhaust gas purification technology, specifically, it relates to a heat energy recovery and purification system for exhaust gas from a wheel hub spray painting line. Background Technology

[0002] Before being assembled into a car, wheel hubs are usually sprayed with an alignment surface. During the spraying process, exhaust gases are continuously emitted. In order to avoid environmental pollution, exhaust gas treatment equipment is usually used to treat the exhaust gases. However, the purification process of exhaust gases results in the waste of heat energy.

[0003] Chinese invention patent CN117268123A discloses a heat recovery device for waste gas from nickel-iron processing. When the waste gas from the blast furnace is discharged from the first waste pipe, it is transmitted to a filter and a spray tower for purification. At the same time, the heat recovery mechanism generates suction, which causes the gas with residual heat after purification in the spray tower to be transmitted to the inside of the recovery box through the third transmission pipe. After being heated by the heating mechanism, it is then transported to the air inlet of the blast furnace through the indirect discharge mechanism, thus achieving the effect of waste heat recovery. This solves the problem that the waste gas still has heat after purification, and that direct discharge of the waste gas would result in heat waste.

[0004] In the existing technology, heat recovery still involves filtering the exhaust gas first and collecting the heat energy released during the filtration process. This results in most of the heat energy still being dissipated. Therefore, this utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a wheel hub painting line exhaust gas heat energy recovery and purification system that can overcome the above problems or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A waste gas heat recovery and purification system for a wheel hub painting line includes a heat energy box, a water tank inside the heat energy box, and a waste gas heat dissipation box inside the water tank. The surface of the waste gas heat dissipation box is concave and convex. One end of the waste gas heat dissipation box is provided with a waste gas inlet pipe, which passes through the water tank and the heat energy box in sequence and extends to the outside of the heat energy box. The end of the waste gas inlet pipe is connected to the painting chamber on the wheel hub painting line through a flange. The other end of the waste gas heat dissipation box is connected to a waste gas outlet pipe, which passes through the water tank and the heat energy box in sequence and extends to the outside of the heat energy box. The end of the waste gas outlet pipe is connected to a filter device, and the output end of the filter device is connected to an exhaust pipe.

[0007] Furthermore, the end of the heat energy box through which the exhaust gas inlet pipe passes has multiple intake branch pipes arranged in a rectangular shape. Cold air enters the heat energy box through the intake branch pipes for heating. The end of the heat energy box through which the exhaust gas outlet pipe passes has multiple hot air branch pipes arranged in a rectangular shape. Heated air is discharged through the hot air branch pipes. The number of hot air branch pipes is less than the number of intake branch pipes.

[0008] Furthermore, multiple intake branch pipes are distributed on both sides and the bottom of the heat energy box. The intake branch pipes on both sides of the heat energy box are connected to intake connecting pipes at their ends, and the intake branch pipes at the bottom of the heat energy box are connected to intake main pipes at their ends. The bottom end of the intake connecting pipe is connected to the intake main pipe, and the upper end of the intake connecting pipe is sealed. An external fan is connected to the end of the intake main pipe.

[0009] Furthermore, the ends of multiple hot air branch pipes are connected to a common hot air connecting pipe, which has a U-shaped structure. The end of the hot air connecting pipe is connected to a hot air outlet pipe, which flows back into the wheel hub painting line through an external flange pipeline.

[0010] Furthermore, multiple air ducts are equidistantly arranged on both sides of the water tank, and the air ducts are semi-circular in structure. The center of the air duct is on the same straight line as the center of the air intake branch pipes on both sides of the heat energy box. When the fan blows the airflow through the air intake branch pipes into the heat energy box, the airflow flows rapidly in the air duct and carries the water tank away.

[0011] Furthermore, an inspection port is centrally located on the upper surface of the water tank, and an eave is provided around the inspection port. A sealing cover is fixed to the eave with screws, and a water injection pipe is provided on one side of the upper surface of the water tank.

[0012] Furthermore, multiple support columns are evenly distributed on the bottom surface of the heat energy box to support the water tank, and wind baffles are symmetrically arranged on both sides of the inner wall of the heat energy box. The wind baffles on the same side are staggered vertically, and the ends of the wind baffles are in contact with the outer surface of the water tank.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: (1) In this utility model, the surface of the exhaust gas heat dissipation box is concave and convex, which increases the contact area between the exhaust gas and the water in the water tank, and can more effectively transfer the heat in the exhaust gas to the water in the water tank, thereby improving the heat recovery efficiency. Cold air is drawn in through the intake branch pipe, heated and discharged through the hot air branch pipe, thereby heating the cold air and recovering the heat energy in the exhaust gas. The heated air can be returned to the wheel hub spraying line for preheating and other processes, saving energy. Furthermore, the intake branch pipes are distributed on both sides and bottom of the heat energy box. With the air duct design, the fan can drive the airflow to flow quickly in the air duct, which enhances the heat exchange efficiency between the air and the water tank, while ensuring uniform airflow in the heat energy box, so that the heat energy is recovered more fully. The hot air branch pipe is connected to the hot air outlet pipe through the hot air connecting pipe, which facilitates the centralized collection and transportation of heated air, thereby realizing the effective utilization of heat energy.

[0014] (2) In this utility model, by setting a waste gas heat dissipation box with a concave-convex surface in the heat energy box, rationally distributing the air intake branch pipe and hot air branch pipe, setting the air duct and wind baffle, etc., the heat in the waste gas can be transferred to the water in the water tank more effectively, thereby improving the heat recovery efficiency and enhancing the heat exchange efficiency between the air and the water tank, so that the heat recovery is more complete and the heated air can be returned to the wheel hub spraying line, thus realizing the efficient recovery and utilization of the heat energy of the waste gas.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram: Figure 1 The present invention provides a three-dimensional structure for a waste gas heat energy recovery and purification system. Figure 1 ; Figure 2 The present invention provides a three-dimensional structure for a waste gas heat energy recovery and purification system. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the waste gas heat energy recovery and purification system of this utility model; Figure 4 This is a schematic diagram of the water tank structure of this utility model.

[0017] Figure 5 This is a cross-sectional view of the heat exchange mechanism structure of this utility model.

[0018] Figure 6 This is a schematic diagram of the internal structure of the thermal energy box of this utility model.

[0019] In the diagram: 101, Heat exchanger; 1011, Inlet branch pipe; 1012, Inlet connecting pipe; 1013, Inlet main pipe; 1014, Hot air branch pipe; 1015, Hot air connecting pipe; 1016, Hot air outlet pipe; 1017, Support column; 1018, Wind baffle; 102, Water tank; 1021, Air duct; 1022, Water injection pipe; 1023, Eaves; 1024, Sealing cover; 103, Exhaust gas heat dissipation box; 1031, Exhaust gas inlet pipe; 1032, Exhaust gas outlet pipe; 104, Filter device; 1041, Exhaust pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] See Figure 1-2This is a structural diagram of the heat energy recovery and purification system in this embodiment. One of the core components of the heat energy recovery and purification system for the exhaust gas from the wheel hub painting line in this embodiment is the heat energy box 101. The heat energy box 101 is made entirely of robust metal material, has good heat insulation performance, and can effectively reduce heat loss. Inside the heat energy box 101, a water tank 102 is carefully installed. The design of the water tank 102 fully considers its role in the system and is made of corrosion-resistant materials to ensure long-term stable operation. To achieve stable support for the water tank 102, the heat energy box 101... Multiple support pillars 1017 are evenly distributed on the inner bottom surface of the water tank 102. These support pillars 1017 are arranged at regular intervals and are made of sturdy and durable material. They can not only bear the weight of the water tank 102, but also ensure that the water tank 102 is fixed in position within the heat energy box 101, preventing displacement of the water tank 102 due to vibration or other factors. Inside the water tank 102, there is also a built-in exhaust gas heat dissipation box 103. The surface of the exhaust gas heat dissipation box 103 is specially designed with a concave-convex shape. This unique surface structure greatly increases the heat dissipation area, enabling more efficient transfer of heat from the exhaust gas to the water tank 102. In the water, one end of the exhaust gas heat dissipation box 103 is equipped with an exhaust gas inlet pipe 1031. The exhaust gas inlet pipe 1031 is made of a high-temperature resistant and well-sealed pipe material, which precisely passes through the water tank 102 and the heat energy box 101 in sequence, and finally extends to the outside of the heat energy box 101. The end of the exhaust gas inlet pipe 1031 is tightly connected to the spraying chamber of the wheel hub spraying line through a special flange, ensuring that the exhaust gas generated during the spraying process can smoothly enter the exhaust gas heat dissipation box 103. The other end of the exhaust gas heat dissipation box 103 is connected to an exhaust gas outlet pipe 1032, through which the exhaust gas is discharged. Pipe 1032 also has good high temperature resistance, passing through water tank 102 and heat energy box 101 in sequence and extending to the outside of heat energy box 101. The end of exhaust gas outlet pipe 1032 is connected to filter device 104. The filter device 104 adopts the air purification or filtration mechanism commonly used in wheel hub painting lines in the prior art. Specifically, it can adopt Zhongshan Weisler VCLE series, which is used to purify the exhaust gas and remove any harmful substances that may remain in it. The output end of filter device 104 is connected to exhaust pipe 1041 for discharging the purified gas.

[0022] See Figure 3-4This is a structural diagram of the internal system for heat energy recovery and purification in this embodiment. In this embodiment, multiple intake branch pipes 1011 are arranged in a rectangular pattern at one end of the heat energy box 101 through which the exhaust gas intake pipe 1031 passes. The purpose of the intake branch pipes 1011 is to introduce cold air from the outside and heat it inside the heat energy box 101. The diameter of the intake branch pipes 1011 is precisely calculated to ensure the uniformity and stability of the airflow. The cold air enters the heat energy box 101 from the intake branch pipes 1011 and begins to exchange heat with the water tank 102 and the exhaust gas heat dissipation box 103. The heat energy box 101 is connected by the exhaust gas outlet pipe 1... The 032 end also has multiple hot air branch pipes 1014 arranged in a rectangular shape. Heated air is discharged through these hot air branch pipes 1014. It is worth noting that the number of hot air branch pipes 1014 is less than the number of inlet branch pipes 1011. This design optimizes the airflow path and heat exchange efficiency inside the heat energy box 101 while ensuring sufficient hot air output. Multiple inlet branch pipes 1011 are distributed on both sides and the bottom of the heat energy box 101. This layout helps cold air to more comprehensively contact the water tank 102 and the exhaust gas radiator 103, thereby more fully absorbing heat. The heat energy... The intake branch pipes 1011 on both sides of the heat exchange box 101 are connected to intake connecting pipes 1012. Intake connecting pipes 1012 balance the air pressure and flow rate of the intake branch pipes 1011 on both sides, ensuring uniform air intake on both sides. The intake branch pipes 1011 located at the bottom of the heat exchange box 101 are connected to intake main pipes 1013. Intake main pipe 1013 serves as the main channel for cold air to enter the heat exchange box 101; its relatively large diameter ensures sufficient airflow. The bottom end of intake connecting pipe 1012 connects to intake main pipe 1013, and the upper end of intake connecting pipe 1012 is sealed to prevent air from escaping from the top. An external fan is connected to the end of the main air pipe 1013. The fan provides power to continuously draw cold air into the heat energy box 101. The ends of multiple hot air branch pipes 1014 are connected to a hot air connecting pipe 1015. The hot air connecting pipe 1015 has a unique U-shaped structure. This shape design is conducive to collecting and guiding hot air and reducing energy loss during the flow of hot air. The end of the hot air connecting pipe 1015 is connected to a hot air outlet pipe 1016. The hot air outlet pipe 1016 flows back into the wheel hub painting line through an external flange pipeline, sending the heated air back to the wheel hub painting line for reuse, realizing the recovery and reuse of heat energy.

[0023] See Figure 5-6This is a structural diagram of the heat exchange mechanism in this embodiment. In this embodiment, baffles 1018 are symmetrically arranged on both sides of the inner wall of the heat tank 101. These baffles 1018 are made of thin metal sheets, possessing a certain degree of toughness and strength. The baffles 1018 on the same side are arranged in a staggered pattern, which effectively changes the airflow path within the heat tank 101, extending the contact time between the air and the water tank 102 and the exhaust gas heat dissipation box 103, thereby improving heat exchange efficiency. The ends of the baffles 1018 are in close contact with the outer surface of the water tank 102, thus slowing down the airflow and extending the air heat absorption time to a certain extent. Multiple air ducts 1021 are equidistantly opened on both sides of the water tank 102, and each air duct 1021 has a semi-circular structure. The center of the air duct 1021 is on the same straight line as the center of the air inlet branch pipes 1011 on both sides of the heat tank 101. This precise design allows the airflow driven by the fan to flow smoothly. The air enters the heat tank 101 through the intake branch pipe 1011 and flows rapidly within the air duct 1021. During this flow, the airflow makes full contact with the water tank 102, quickly carrying away the heat from the water tank 102. A maintenance port is centrally located on the upper surface of the water tank 102, facilitating regular inspection, maintenance, and cleaning of the interior of the water tank 102 by personnel. A ring of eaves 1023 surrounds the maintenance port, and a sealing cover 1024 is fixed to the eaves 1023 with screws. The sealing cover 1024 effectively prevents dust, debris, etc., from entering the interior of the water tank 102 and affecting its normal operation. A water injection pipe 1022 is located on one side of the upper surface of the water tank 102, allowing for convenient replenishment of water to the water tank 102 to maintain the normal operation of the system. A pressure relief valve can be installed on the water injection pipe 1022 to balance the air pressure after the water is heated.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A waste gas heat recovery and purification system for wheel hub painting lines, comprising a heat energy box (101), characterized in that, The heat exchange box (101) has a built-in water tank (102), and the water tank (102) has a built-in exhaust gas heat dissipation box (103). The surface of the exhaust gas heat dissipation box (103) is uneven. One end of the exhaust gas heat dissipation box (103) is provided with an exhaust gas inlet pipe (1031), and the exhaust gas inlet pipe (1031) passes through the water tank (102) and the heat exchange box (101) in sequence, extending to the outside of the heat exchange box (101). The end of the exhaust gas inlet pipe (1031) is... The part is connected to the spraying chamber on the wheel hub spraying line through a flange. The other end of the exhaust gas heat dissipation box (103) is connected to an exhaust gas outlet pipe (1032). The exhaust gas outlet pipe (1032) passes through the water tank (102) and the heat energy box (101) in sequence and extends to the outside of the heat energy box (101). The end of the exhaust gas outlet pipe (1032) is connected to a filter device (104). The output end of the filter device (104) is connected to an exhaust pipe (1041).

2. The waste gas heat recovery and purification system for wheel hub painting line according to claim 1, characterized in that, The heat energy box (101) has multiple intake branches (1011) arranged in a rectangle at one end through which the exhaust gas intake pipe (1031) passes. Cold air enters the heat energy box (101) through the intake branches (1011) and is heated. The heat energy box (101) has multiple hot air branches (1014) arranged in a rectangle at one end through which the exhaust gas outlet pipe (1032) passes. Heated air is discharged through the hot air branches (1014). The number of hot air branches (1014) is less than the number of intake branches (1011).

3. The waste gas heat recovery and purification system for wheel hub painting line according to claim 2, characterized in that, Multiple intake branch pipes (1011) are distributed on both sides and the bottom of the heat energy box (101). The intake branch pipes (1011) on both sides of the heat energy box (101) are connected to intake connecting pipes (1012) at their ends, and the intake branch pipes (1011) at the bottom of the heat energy box (101) are connected to intake main pipes (1013) at their ends. The bottom end of the intake connecting pipe (1012) is connected to the intake main pipe (1013), and the upper end of the intake connecting pipe (1012) is sealed. The end of the intake main pipe (1013) is connected to an external fan.

4. The waste gas heat recovery and purification system for wheel hub painting line according to claim 2, characterized in that, The ends of multiple hot air branch pipes (1014) are connected to a hot air connecting pipe (1015), and the hot air connecting pipe (1015) has a U-shaped structure. The end of the hot air connecting pipe (1015) is connected to a hot air outlet pipe (1016), and the hot air outlet pipe (1016) flows back into the wheel hub painting line through the flange external pipeline.

5. The waste gas heat recovery and purification system for wheel hub painting line according to claim 3, characterized in that, The water tank (102) has multiple air ducts (1021) equidistantly opened on both sides of the side wall, and the air ducts (1021) are semi-circular structures. The center of the air ducts (1021) and the center of the air intake branch pipes (1011) on both sides of the heat energy box (101) are on the same straight line. When the fan blows the airflow through the air intake branch pipes (1011) into the heat energy box (101), the airflow flows rapidly in the air ducts (1021) and carries away the water tank (102).

6. The waste gas heat recovery and purification system for wheel hub painting line according to claim 1, characterized in that, The water tank (102) has an inspection port in the center of its upper surface and an eave (1023) around the inspection port. The eave (1023) is fixed with a sealing cover (1024) by screws. A water injection pipe (1022) is provided on one side of the upper surface of the water tank (102).

7. The waste gas heat recovery and purification system for wheel hub painting line according to claim 1, characterized in that, The bottom surface of the heat energy box (101) is uniformly provided with multiple pads (1017) to support the water tank (102), and the inner walls of the heat energy box (101) are symmetrically provided with wind baffles (1018) on both sides, and the wind baffles (1018) on the same side are arranged in an alternating manner, with the ends of the wind baffles (1018) in contact with the outer surface of the water tank (102).

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